Introduction to OpenCV Dr. Chung-Hao Chen Haole Guo Sep 2011.
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Transcript of Introduction to OpenCV Dr. Chung-Hao Chen Haole Guo Sep 2011.
Introduction to OpenCV
Dr. Chung-Hao ChenHaole GuoSep 2011
Index
1. What is OpenCV ?2. What can OpenCV do ?3. How to setup OpenCV ?
What is OpenCV ?
• OpenCV is a based on C / C + + language, open source image processing library
• Develop by Inter• Free to use
What can OpenCV do ?• Image data manipulation• Image and video I/O• Matrix and vector manipulation and linear algebra routines • Various dynamic data structures• Basic image processing• Structural• Camera calibration• Motion analysis• Object recognition• Basic GUI• Image labeling
How to setup openCV ?
Downlinks:1. OpenCV lib
http://sourceforge.net/projects/opencvlibrary/files/2.VS2008
http://www.microsoft.com/express/product/default.aspx3.Codeblockhttp://www.codeblocks.org/4. Cmake
http://www.cmake.org/cmake/resources/software.html
Download OpenCV and install
• Download the OpenCV 2.1.0 Windows installer from SourceForge - "OpenCV-2.1.0-win32-vs2008.exe".
• Install it to a folder (without any spaces in it), say "C:\OpenCV2.1\". This article will refer to this path as $openCVDir
• During installation, enable the option "Add OpenCV to the system PATH for all users".
Setup OpenCV in VS2008
1. Configure Visual Studio• Open VC++ Directories configuration: Tools > Options > Projects
and Solutions > VC++ Directories• Choose "Show directories for: Include files"
– Add "$openCVDir\include\opencv"• Choose "Show directories for: Library files"
– Add "$openCVDir\lib"• Choose "Show directories for: Source files"
– Add "$openCVDir\src\cv"– Add "$openCVDir\src\cvaux"– Add "$openCVDir\src\cxcore"– Add "$openCVDir\src\highgui"
Setup OpenCV in VS20082. Configure your Project• After you've created a project you'll need to add the OpenCV
dependencies.• Open Project Properties: Project > %projectName% Properties...• Open Linker Input properties: Configuration Properties > Linker > Input• Open the "..." window to edit "Additional Dependencies" and on each
line put:– "cv210.lib"– "cxcore210.lib"– "highgui210.lib"– And any other lib file necessary for your project
• Your project should now build. If you get any errors try restarting Visual Studio and then doing a clean Rebuild.
Setup openCV in VS2008
3. Support video on youtubehttp://www.youtube.com/watch?v=9nPpa_WiArI
Setup openCV in Codeblock
1.Build project
Setup OpenCV in Codeblock
2.Name and address
Setup openCV in codeblock
3.Write a test program
Setup openCV in codeblockSample program• #include "cv.h" • #include "highgui.h" • int main( int argc, char** argv ) • {
– IplImage* pImg;
– if( argc == 2 && – (pImg = cvLoadImage( argv[1], 1)) != 0 )
• { cvNamedWindow( "Image", 1 );• cvShowImage( "Image", pImg );• cvWaitKey(0); • cvDestroyWindow( "Image" );• cvReleaseImage( &pImg ); • return 0;
– } – return -1;
• }
Setup openCV in codeblock
4. Go setup build options
Setup openCV in codeblock
5.Build option- search directories - complier
Setup openCV in codeblock
6.Build option – search directories - linker
Setup openCV in codeblock
7.Build option – linker settings
Setup openCV in codeblock
8. Setup input image
Setup openCV in codeblock
9.Result output: